Icon System

Generate a complete icon system specification for a product.

Usage

/icon-system
/icon-system --library lucide --framework react
/icon-system --audit   # audit existing icons for consistency issues

Steps

Use the icon-system skill throughout this command.

1. Gather context (ask if not in $ARGUMENTS)

• Framework: React / Vue / Svelte / HTML / other?
• Brand style: Minimal/technical | Friendly/rounded | Bold/geometric | Custom
• Custom icons needed: Yes / No (how many approximate)
• Audit mode: Is this for a new project or reviewing existing icons?

2. Library recommendation

Based on the brand style and framework:

• Compare Lucide, Phosphor, Heroicons, Tabler (size, style, license, weight variants)
• Recommend one primary library with justification
• Note if a custom icon brief is needed for brand-specific icons

3. Token definitions

Output a complete token set:

/* Size tokens */
--icon-xs: 12px;
--icon-sm: 16px;
--icon-md: 20px;   /* default */
--icon-lg: 24px;
--icon-xl: 32px;

/* Stroke tokens (if line-based icons) */
--icon-stroke-sm: 1.5px;
--icon-stroke-md: 2px;     /* default */
--icon-stroke-lg: 2.5px;

/* Color tokens (inherit currentColor — define semantic intent) */
--icon-default: var(--color-neutral-700);
--icon-muted:   var(--color-neutral-400);
--icon-brand:   var(--color-primary);
--icon-success: var(--color-success);
--icon-warning: var(--color-warning);
--icon-danger:  var(--color-error);
--icon-inverse: var(--color-neutral-50);

4. Naming convention

Document the naming convention for the project:

• Format: kebab-case (arrow-right, not rightArrow)
• Semantic names over literal (edit not pencil, trash not garbage)
• List top 20 common icons with canonical names

5. Icon component template

Generate a typed React (or framework-appropriate) icon component with:

• Size prop mapped to token
• aria-hidden for decorative icons
• aria-label support for meaningful icons
• focusable="false" for SVG

6. Accessibility rules summary

Concise do/don't for the team:

• When aria-hidden="true" is correct
• When aria-label is required
• Icon-only button pattern

7. Audit mode (if --audit flag)

If reviewing existing icons:

1. List all icon-related files found in codebase
2. Check: Are multiple icon libraries mixed?
3. Check: Are hardcoded colors in SVGs (not currentColor)?
4. Check: Do icon-only interactive elements have accessible names?
5. Check: Is there a consistent naming convention?
6. Output: Priority-sorted fix list

Output

Deliver as a markdown document that can be saved to docs/icon-system.md:

• Library decision with rationale
• Token CSS block (copy-pasteable)
• Naming convention table
• Icon component code
• Accessibility rules
• (In audit mode) finding list with severity

After This

• /design-system-review — verify icons integrate correctly with the design system
• /code-review — review icon component implementation